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code help please

  1. P

    are these codes from the same source(problem)?

    I have a 1994 ex XLT 4.0 and all of a sudden my check engine shows up after running for a few min. So I run get code reader and this is what I got KOEO: 335 Mem: 157,327,332,336 KOER: 325,536,11,46 I seems to run good and the codes talk about low or high voltages, and I have no clue where to...
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